A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5925-01-026-0891
NSN 5996-01-037-3153
NSN 2925-01-502-5896
NSN 5945-01-177-1279
NSN 5998-00-274-3268
NSN 2925-00-595-7525
NSN 6105-01-506-1281
NSN 5999-01-462-4628
NSN 6650-00-620-0212
NSN 5945-01-205-7857
NSN 6135-01-466-3980
NSN 6650-01-629-6469